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Patented Ma.. 20, 1894-- MMM@ wunma'ron. u. c.

(No Mode1,)' E T lWHEED 3 Sheets-Sheet 2.

PLATE HOLDER FOR PRINTING PLATES.

No. 516,672. Patented Mar, 20,1894.

@www 3 Sheets-Sheet 3.

(No Model.)

E. T. WHEED.- PLATE HOLDER POR PRINTING, PL.1 \.TES.` n No. 516,672. Patented Mar. 20, 1894.

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l Mfr-ED STATES I PATENT OFFICE.

EDWARD T. WHEED, OF CHICAGO, ILLINOIS.

PLATE-HOLDER Fon PRlNTlNe-PLATES.

SPECIFICATION forming part of Letters Patent No. 516,672, dated March20, 1894.

Application tiled July 5, 1893. Serial No. 479.594. (No model.)

. v To @ZZ whom/it may concern:

Be it known that I, EDWARD T. WHEED, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Plate-Holders for Printing Purposes; and I dodeclare the'following to be a full, clear, and exact description of the invention, such as will enable others skilled in` the art to which it appertains to make and use the same, reference being had to the accompany-v ing drawings, and to the figures of reference marked thereon, which form a part of this speciication.

My invention relates to the base or holder'for mounting electrotype and stereotype plates for the printing press. A

Its objects are to provide a sectional holder, all or a part of which may be used according to the size of the plate; to facilitate` the adjustment of the several plates upon the form; and to provide an improved clamping block.

The invention consists of l`a central block which may be used alone for carrying a small plate, and a succession of right-angled strips for enlarging the area ot' the holder to accommodate larger plates.

It consists further in the formation ot' these parts so that clamping blocks for securing the plates may be adjusted upon them.

It consists of such further parts and in the arrangement of the various parts as hereinafter set forth. f;

In the accompanying drawings are shown in Figure 1. a plan of the plate holder adjusted to carry a plate of large size; Fig. 2, a plan view of the central block carrying a plate and locked in a chase; Fig. 3, a bottom plan view of the central block; Fig. 4, a transverse vertical section on the line 4--4 of Fig. 2; Fig. 5, an elevation of the ordinary locking rack in engagement With the pinion of a clamp; Fig. 6, a side elevation of one of the clamping blocks; Fig. 7, a plan of one of the outer angular sections; Fig. 8, a transverse vertical section on the line 8-8 of Fig. 7; Fig. 9, two of the outer angular sectional pieces of different holders in proximity.

The common practice has been to use a separate block foreach plate and consequently blocks of various sizes of plates.

v Ilhe basic elements of my holder are the oblong rectangular` central blocks 1, 2, each of which is adapted to hold a small plate, 23, as

shown in Fig. 2, and to be locked in a chase 24, alone if fbut one page is top be printed. The plate 23 is locked to the holder by means of the keyed clamp blocks 2l, whose stems 'lit Within the holes 16, 16, and the screw adjusted clamping blocks 17, which are fitted within the slots 14, 14, entering from the side of the block. The bosses 11, 11, upon the block 1, and 1,2, 12

upon the block 2 are for the purpose of enlarging the area of these blocks to accommodate plates which would overlap them, each boss having a key hole so as to carry a clamping block 21. are separated by the use of furniture to provide the proper margins forthe pages. It Will be seen that the blocks'l, 2 are adapted to lit The adjacentvblocks in that event together, side to side or end to end and that a four page sheet can be printed by the use of two each, arranged as indicated in Fig. 1, so that in printing small pages it is only necessary to re-duplicate the blocks 1,'2, to provide one for each page. Should the plates be too large for the central blocks the size of the holder is increased by placing against the block 1, the right-angled strip 3, and against the block 2, the right-angled strip 4. The clamping 14a, and one of the key blocks 21, may be placed in each of the adjacent ends of the strips 3, 4. The holder may be still further enlarged by the addition of the angular strips 5, 6, 7, 8, 9,10, as may be required--the clamping blocks 17 being always placed in the outer edge of the holder, and the blocks 21 opposite to them in the holes 15, 16. Theseholes are numerous and variously located so as to adlmit of considerable range in the location of the plate upon the holder. v

In printing from more than four plates the arrangement of the four holders shown in Fig. 1, is repeated, the outer edges coming together in the manner indicated in Fig. 9.

It will be observed that the slots 13, 13a, 13b, dac., in the block 1, and strips co-operating with it are in relatively different positions from the slots 14, 142, 14h, &c., in block 2 and the strips co-operating with it so that when the outer edges of the even numbered blocks or IOO 8o blocks 17, will now be placed in the slots 13,

strips lie against the outer edge of the odd numbered blocks or strips their respective slots do not coincide.

The castings may be solid. There is however no necessity for using so much metal and the bottoms of the blocks and strips are preferably chaxnbered, or, differently described.

The platform of the plate holder is supported upon flanges and ribs 22, 22a.

The clamping blocks 17 21, are formed with beveled edges to engage the plates, Whose sides are commonly of similar form. The key stem 21a of the clamping blocks 21, is provided with a bit and the holes 15, 16, are each provided with a lateral slot to permit its entry. The stem having been inserted in the holeand the block being turned upon it a quarter turn is securely locked in place.

The clamping blocks 17 are each provided' with a shank adapted to project within the slots 13, 14, duc., and having shoulders for engaging the under surface of the holder platform. `The shank is also provided with a screw f threaded aperture Within which is placed a screw threaded shaft or bolt 18, carrying at its outer endapinion 19. A journal block 20, is also mounted upon the outer en'd of the bolt 18. These journal blocks are ob long rectangular in shape and are slotted at one end setas to inclose the pinion, which however, extends somewhat above the block. The solid end of the block serves as furniture in making up the form and relieves the pinion 'from pressure so that it may be freely turned by means of the hand rack bar 25. The blocks 2O may be thrown over in either direction as the clamp is adjusted toits place so that when two parts as 3, 4, of the holder are brought together as shown in Fig. 9, those upon the one piece do not interfere with those upon the other and the parts of the holder are separated only by the thickness of one of the journal blocks. This adjustment is made possible by the relative location of the slots 13, 14, dac., as herein before described.

` The angular strips 5, 6, 7, 8, are shown as having more slots upon their longer sides than the other strips. This construction is to adapt the holder to the peculiar form of the plates used in legal printing, which are of such size as to require the use of these strips and in which marginal notes are common and the edges of the plates are consequently irregular.

I claim as my inventionl. In a printing plate holder the combination with the central blocks 1, 2, adapted to lie against each other side to side or end to end, of right angled extension strips 3, 4:, each adapted to lie along two sides of one of the central blocks, said blocks having a series of holes through their faces adjacent to two sides, and said strips having similar holes near their ends and slots entering from their outer edges and extending partially across their faces, clamping blocks 21, having stems for fitting within the holes, and clamping blocks 17, adapted to slide in the slots in the strips 3, 4, and screw threaded bolts for adjusting said blocks 17, substantially as described and for the purpose specified.

2. In a printing plate holder the combination with central oblong, rectangular blocks 1, 2, adapted to lie side to side or end to end, of right angled extension strips of increasing length for increasing the face area of the plate holder without changing its form, said central blocks having holes in their faces near their a'djacent sides for receiving the stems of clamping blocks, and said strips having transverse slots entering from their outer edges and extending a portion of the distance across their faces for carrying adjustable clamping blocks, said slots in the strips co-operating with the block 1, being in dierent position relatively to the slots in the strips cooperating with the block 2, substantially as described and for the purpose specified.

3. The combination withA printing plate holders having slots entering from their outer edges and extending partially across their faces, of clamping blocks adapted to slide within said slots, screw threaded adjusting bolts fitting within the bases of said blocks,

a pinion fixed upon the outer end of each of Y said bolts, a journal block mounted upon each bolt and having aslot within which said pinion is located, said block having a solid portion extending in one direction only from the bolt, substantially as described and for the purpose specified.

In testimony whereof I aiiix my signature in presence of two Witnesses.

EDWARD T. VIIEED.

Witnesses:

L. K. GInLsoN, M. Il. L. WING.

IOO 

